When I try to login, whether I use a password or the google authentication, I get redirected to:
 

This app.box.com page can’t be found

No webpage was found for the web address: https://app.box.com/folder/0

HTTP ERROR 404

Hi ​@tchen and ​@SP4C3M4N, 

Welcome to Box Community, and we’re glad to help with your log in error.

There are a couple of things you might want to check to resolve your log in issue: 

• Updating your browser to the latest version
• Clearing your browser's cache
• Using Box with an alternate browser, computer, or network. 
• Temporarily disabling any internet security/firewall programs to test whether they conflict with Box (Note: you may need clearance or assistance from your organization’s IT department/helpdesk to do this)
• Temporarily disabling any plugins/extensions in your browser
• Removing unwanted extensions, plug-ins, ads, pop-ups & malware:
  • Chrome, Edge, Firefox, Safari
• Also, you might want to check if your browser and Operating System is supported by Box.

Hope it works! Please let us know if you have additional questions.